Figure 1: Panel A: Sonoanatomy of venous confluence of three vessels [IJV, SCV, and left BCV]. Panel B: diameter of left BCV before and after bolus fluid administration. Panels C and D: M-mode ultrasound of left BCV with its minimum diameter before and after bolus fluid administration. Panels: M-mode ultrasound of left BCV with its maximum diameter before and after bolus fluid administration
![Figure 1: Panel A: Sonoanatomy of venous confluence of three vessels [IJV, SCV, and left BCV]. Panel B: diameter of left BCV before and after bolus fluid administration. Panels C and D: M-mode ultrasound of left BCV with its minimum diameter before and after bolus fluid administration. Panels: M-mode ultrasound of left BCV with its maximum diameter before and after bolus fluid administration](articles/2023/17/1/images/SaudiJAnaesth_2023_17_1_128_364859_f1.jpg)